Eye structure for anchor rods



Aug. 24, 1943. H. F. STOVE R 2,327,567

EYE STRUCTURE FOR ANCHOR RODS Filed June 27, 1942 lNVENTOR H F STOVER AT TORNEV Patented Aug. ,24, 1943 1-.1

v P EN "955 4 f srsuornnn FOR MCI-10R eons *THe bert Stoyer, "ismbkiyii .N; Ya: assignor t {Bell Telephone Laboratories, Incorporated','New Yorhika corporation of New York App i ati n Jim??? fi al seria Nokisailiil I claims w i e- 129;

. This invention. relates itoLanchori-ng Jdeuicesf and more particularly to :improvementsin the :eye structure ofsuchdeirices' through which a 'guy wiireor the like islooped. The object of the present inventioncls the pro,-

number of failures of the strands at the eyes of the guy rods. 7

In the present types of guy rods, eye bolts and the like, the eye is so constructed that the guy vision of anew-structure which will reduce the strand, which passes therethrough; is bent around a a comparatively small radius, thereby bending the strand so sharply that the strand is weakened at that point and failure soon results.

One method of overcoming this defi cie ncy has Etegr. lpart iof ananchor rod or bolt 4 0; which may be 1 of desired "length. In this instance, it, :is provided at; its lower end with :a v threaded portionpL-iandtanut 1:2 positioned thereon.

. some instances the nut. A 2-may be d p n ed wit .7 nd means for se uring ither io t anthers-Q? the likemay be substituted therefor. The bolt It], may, in certain instances, be a part of other devices to which it is desired to secure a strand or a similar length of material thereto.

The upper end of the rod I0 is provided with the improved eye structure of my invention and comprises a substantially circular fiat portion l3 7 provided with a central bore or aperture 14 and been to insert through the eye what-is known as a thimble and positioningthe guy strand in this thimble, the radius of the thimble being substantially larger than that of the eye bolt and thereby providing a larger radius of curvature for the strand at the point where it contacts the eye. However, thismethod necessitates an extra piece of equipment and it has been found in some instances where great strains are applied that the thimble collapses, thereby permitting the strand positioned therein to assume a sharp raa transverse slot l5. Theslot l5 provides a certain amount of give or springiness to thefiat portion l3' which dampens the vibrations of the strand l9 located in the groove I! thereby reducing to a. minimum strand fatigue at the point where it contactsthe eye structure. The flat portion [3 converges with the bulbous portion l6 7 of the shank l0, and' is provided with a circumdius where it contacts the eye bolt; In the improved eye structure of the present invention, the advantages of a large thimble eye have beenincorporated in the eye structure of the bolt thereby providing in a single unit the strenth of an eye and the larger radius of curvature of the thimble eye.

As shown in the eye structurefof this invention, the eye structure is provided with a large,

radius of curvature without weakening the structure of the eye itself. 'This is accomplished by providing a suitable flat :circular portion having a circumferential strand-receiving groove therein and a bulbous shank portion having a bore therein which communicates with the circumferential groove in the flat portion.

The invention, will be more clearly understood from the following detailed description when read in connection with .the following drawing of which: i

Fig. 1 is a side elevation of an anchor'rod or bolt provided with the improved eye structure of this invention; 1'

Fig. 2 is a view in perspective of the'structure shown in Fig. 1; and p Fig. 3 is a side elevation of theeye structure; 7

shown in Figs. 1 and. 2..

As shown in the drawing the eye structure of this invention is illustrated as forming an inferential groove I1 on the periphery thereof which communicates withthe bore I8 in the bulbous V portion l6 for receiving the strand l9.

It will be observed with reference to Fig. 1 that the circumferential groove "is designed to pro- ,vide a long continuous bearing surface for the guy strand I9, which when looped through the.

eye and positioned in the. groove and subjected to the required tension, will be drawn into inti- Q mate contact with said groove and rest inthe bottom thereof. 7 V

The circumferential groove 11 has a radius of curvature sufficiently large to reduce to a minimum the bending strain on the guyv wire l9 and consequently to avoid injury thereto.

While I have shown and described the preferred form and application of my invention, it' is to he understood that various changes and modifications may be made therein without departing from the spirit of the invention and are only limited by the scope of the appended What is claimed is: q .1. An eye structure foranchor rods andthe like comprising a substantially circular flat portion, a bulbous shank portion having a substan- V a v tially triangular cross section converging. therewith,'a-substantia1ly continuous circumferential;

groove in the periphery of said flat portion and a circular bore in said shank portion'communi ,cating with said'circumferential groove.

2. An eye structure for anchor rods'and' the like comprising a substantially circular flat'portion having an aperture therein, a bulbous shank claims.

1 g} portion having a substantially triangular cross section converging with said flat portion and having a central bore therein, and a substantially portion having a'substan'tially triangular cross section converging with said flat portion, and

5. An eye structure for anchorrods and th like comprising a substantially circular fiat porc tion having a central bore therein, and a slot in the periphery of said flat portion communieating with said central bore, a bulbous shank" portion having a substantially triangular cross section converging with said flat portion and having a bore therein and a substantially continiious-' circumferential] groove in the. periphcry of said fiat portion communicating with said central bore, the side walls of which'converge having a central bore therein at right-angles with respect to said aperture and. a substantially 4 continuous circumferential groove in the .peripha cry of said flat portion communicating witli 'said central bore. e 1 I V 4. An eye structure for anchor rods and the like comprising a substantially circular fiat por tion, a bulbous shank portion having a substan tially triangular cross section converging the're-' with, a substantially continuous circumferential groove in the periphery of said fiat-portion' and a circular bore in said bulbousportion communi- "eating with said circumferential groove, the

diameter of saidlcircumferential groove being substantially smaller than said bore.

with said bulbous portion. 6. Anieye. structure for anchor rods and the like comprising a substantially circular fiat portion having an'aperture therein, and a slot in [the peripherybisaid fiat portion communicating with said -aperture, a bulbous shank portion having a substantially triangular cross section, converging with said fiat portion and having a central bore therein at right angles with respect to said firstbore; and a substantiallycontinuous circumferential groove .in theflp'eriphery .of said flatv portion communicating with: said central bore the side walls ofiwhich converge with said bulbous p'ortion i J j I c HERBERTFLSTQVER. 

